diff --git a/requirements_dev.txt b/requirements_dev.txt
index 81d507f..fb523d3 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,7 +2,7 @@ cryptography==3.1
 wheel==0.35.1
 bumpversion==0.6.0
 pip==20.2.2
-sphinx==3.2.1
+sphinx==8.1.3
 coverage==5.2.1
 watchdog==0.10.3
 flake8==3.8.3